This is all governed by one main chip, which has what is understood as an engine 'map'. This map 'reviews' all the inputs from sensors as well as is programmed to give the optimum settings under a vast array of conditions. However, perfection is impossible to attain as a whole, as a number of concessions need to be made. Primarily this is due to economic climates of scale. Suppliers need to generate motor vehicles for a vast range of markets where problems such as energy top quality can have a result. As several cars made use of in Europe might be driven right into neighbouring countrysides with poorer gases available, or will be used in extreme settings where dust and severe elevations prevail, the engine administration map is a 'extensive brush' method to take all this into consideration.
Simply put, there is no more any reason to take into consideration engine remapping for either increasing efficiency at the expenditure of fuel intake, or vice versa. There are a variety of professional remapping companies who will supply you the possibility to have your pie and also have it!